The trout were euthanized to prevent the spread of furunculosis. The fatal disease, which affects cold water species of fish such as trout, was discovered in the lowermost portion of the concrete raceway system used to raise trout at the state-run facility, according to the New Jersey Division of Fish and Wildlife

"We wanted to make sure they posed no other wildlife concerns, particularly with birds feeding on them," said Bob Considine, press officer for the state Department of Environmental Protection.

The Division of Fish and Wildlife said the disease is not transmissible to people but the division never advises eating any diseased-looking fish or animal. Signs of furunculosis include darkening of the skin of affected fish as well as large boils and lesions, which officials described as very aggressive.